/* (A) MATERIAL ICONS */
@font-face{font-family:"Material Icons";font-style:normal;font-weight:400;src:url(assets/mi.woff2) format('woff2')}
.mi{font-family:"Material Icons";font-weight:400;font-style:normal;font-size:60px;line-height:1;letter-spacing:normal;text-transform:none;display:inline-block;white-space:nowrap;word-wrap:normal;direction:ltr;-webkit-font-feature-settings:"liga";-webkit-font-smoothing:antialiased}

/* (B) WHOLE PAGE & SHARED */
* {
  font-family: Arial, Helvetica, sans-serif;
  box-sizing: border-box;
}
body, #screenA, #screenB {
  padding: 0; margin: 0;
  width: 100vw; height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
body {
  background: rgb(79,85,171);
  background: linear-gradient(71deg, rgb(79,85,171) 0%, rgb(103,126,218) 77%, rgb(62,69,147) 100%);
}
.hide { display: none !important; }

/* (C) MAIN MENU */
#screenA { text-align: center; }
.mItem {
  width: 300px;
  border-radius: 10px;
  padding: 40px 0;
  margin-bottom: 10px;
  color: #fff;
  background: #363578;
  cursor: pointer;
}
.mItem:hover {
  color: #333;
  background: #f5ee03;
}
.mItem .mTxt { font-size: 24px; }

/* (D) VIEW CARDS */
/* (D1) CARD WARPPER */
#bCard {
  width: 80%; height: 60%;
  position: relative;
}

/* (D2) CARD BACK & FRONT */
.card { cursor: pointer; }
.card, .front, .back {
  width: 100%; height: 100%;
  position: absolute;
}
.front, .back {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  font-size: 60px;
  border-radius: 10px;
  backface-visibility: hidden;
}
.front, .mFront {
  color: #2e189a;
  background: #fff;
}
.back, .mBack {
  color: #fff;
  background: #2e189a;
}
.back { transform: rotateY(180deg); }
.mFront, .mBack {
  display: block;
  width: 100%; height: 50%;
  padding: 20px;
  resize: none;
  font-size: 20px;
}

/* (D3) CARD FILP */
.card {
  transition: transform 0.5s;
  transform-style: preserve-3d;
}
#bCard .card.flip { transform: rotateY(180deg); }

/* (E) CARD CONTROLS */
#bManage {
  padding: 10px;
  color: #fff;
  display: flex;
  align-items: center;
}
#bManage div.mi:hover {
  color: #f5ee03;
  cursor: pointer;
}
#bCardCount { font-size: 24px; }